參數(shù)資料
型號(hào)： TDA4886
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： 140 MHz video controller with I2C-bus
中文描述： SPECIALTY CONSUMER CIRCUIT, PDIP24
文件頁(yè)數(shù)： 13/52頁(yè)
文件大小： 495K
代理商： TDA4886
1998 Nov 11
13
Philips Semiconductors
Product specification
140 MHz video controller with I
2
C-bus
TDA4886
Fast blanking (pin 1) and OSD signal insertion (channel 1: pin 2; channel 2: pin 3; channel 3: pin 4);
note 13
V
1
fast blanking input signal
no video signal blanking,
OSD signal insertion disabled
video signal blanking,
OSD signal insertion enabled
V
1
> 1.7 V
no internal OSD signal
insertion
internal OSD signal insertion
10 to 90% amplitude;
input pulse with 1.2 ns/V
90 to 10% amplitude;
input pulse with 1.2 ns/V
identical pulses at fast blanking
input (pin 1) and OSD signal
inputs (pins 2, 3 and 4)
identical pulses at fast blanking
input (pin 1) and OSD signal
inputs (pins 2, 3 and 4)
pulse with 1.2 ns/V at OSD
signal inputs (pins 2, 3 and 4)
0
1.1
V
1.7
V
P
V
V
2,3,4
OSD input signal
0
1.1
V
1.7
V
P
4
V
ns
t
r(OSD)
rise time of OSD colour signals
(pins 22, 19 and 16)
fall time of OSD colour signals
(pins 22, 19 and 16)
width of (negative going) OSD
signal insertion glitch, leading
edge (pins 22, 19 and 16)
width of (negative going) OSD
signal insertion glitch, trailing
edge (pins 22, 19 and 16)
overshoot/undershoot of OSD
colour signal related to actual
OSD output pulse amplitude
(pins 22, 19 and 16)
maximum OSD colour signal
related to nominal colour signal
(pins 22, 19 and 16)
t
f(OSD)
7
ns
t
g(CO)
0
6
ns
t
g(OC)
0
6
ns
dV
OSD
10
%
V
OSD(max)
maximum OSD contrast;
maximum gain
100
120
140
%
OSD contrast control;
see Fig.9 and note 14
d
OC
OSD colour signal related to
maximum OSD colour signal
0FH (maximum)
00H (minimum)
14
0
12
10
dB
dB
Subcontrast/contrast modulation and beam current limiting (pin 24);
see Fig.8 and note 15
V
24(nom)
V
24(start)
nominal input voltage
starting voltage for contrast
and OSD contrast reduction
stop voltage for contrast and
OSD contrast reduction
bandwidth of contrast
modulation
maximum input current
pin 24 open-circuit
4.7
4.2
5.0
4.5
5.3
4.8
V
V
V
24(stop)
32 dB below maximum colour
signal (contrast setting 3FH)
3 dB
1.5
2.0
2.5
V
B
24
4
MHz
I
24(max)
V
24
= 0 V
1.0
μ
A
Brightness control;
see Fig.10 and notes 16 and 17
V
bl
difference between black level
and reference black level at
signal outputs related to
nominal colour signal
3FH (maximum)
10H (nominal)
00H (minimum)
25
12
30
0
10
35
8
%
%
%
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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